Added a 'delete' action, with the keyboard.

Added a delete action from the keyboard, there's also
a possibility to add the same action from the menu, but
I frankly don't like much the idea. so, to delete a handler
now, you need to select it ( ctrl + click ) then press
the delete button. Multiple delection is also possible.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>

qt-ui/diveplanner.cpp

@@ -124,16 +124,36 @@ DivePlannerGraphics::DivePlannerGraphics(QWidget* parent): QGraphicsView(parent)
 
 	minMinutes = TIME_INITIAL_MAX;
 
-	QAction *escAction = new QAction(this);
+	QAction *action = NULL;
-	escAction->setShortcut(Qt::Key_Escape);
-	escAction->setShortcutContext(Qt::ApplicationShortcut);
-	addAction(escAction);
 
-	connect(escAction, SIGNAL(triggered(bool)), this, SLOT(keyEscAction()));
+#define ADD_ACTION( SHORTCUT, Slot ) \
+	action = new QAction(this); \
+	action->setShortcut( SHORTCUT ); \
+	action->setShortcutContext(Qt::ApplicationShortcut); \
+	addAction(action); \
+	connect(action, SIGNAL(triggered(bool)), this, SLOT( Slot ))
+
+	ADD_ACTION(Qt::Key_Escape, keyEscAction());
+	ADD_ACTION(Qt::Key_Delete, keyDeleteAction());
+#undef ADD_ACTION
 
 	setRenderHint(QPainter::Antialiasing);
 }
 
+void DivePlannerGraphics::keyDeleteAction()
+{
+	if(scene()->selectedItems().count()){
+		Q_FOREACH(QGraphicsItem *i, scene()->selectedItems()){
+			if (DiveHandler *handler = qgraphicsitem_cast<DiveHandler*>(i)){
+				handles.removeAll(handler);
+				scene()->removeItem(handler);
+				delete i;
+			}
+		}
+		createDecoStops();
+	}
+}
+
 void DivePlannerGraphics::keyEscAction()
 {
 	if (scene()->selectedItems().count()){

qt-ui/diveplanner.h

@@ -78,6 +78,7 @@ protected:
 	qreal fromPercent(qreal percent, Qt::Orientation orientation);
 private slots:
 	void keyEscAction();
+	void keyDeleteAction();
 	void increaseTime();
 	void increaseDepth();
 	void okClicked();